The ACTION specifier asks which I/O operations are allowed for a file. It takes the following form:
ACTION = act
Is a scalar default character variable that is assigned one of the following values:
|
'READ' |
If the file is connected for input only |
|
'WRITE' |
If the file is connected for output only |
|
'READWRITE' |
If the file is connected for both input and output |
|
'UNDEFINED' |
If the file is not connected |